Welding-machine.



7 PATENTED AUG. 30, .1904 G. B. WALKER, WELDING MACHINE.

APPLICATION FILED JUNE 28, 1904. Q

2 SHEETS-SHEET 1.

H0 MODEL.

" Fig. 2 is a side elevation thereof.

Patented AugustBO, 1904 UNITED STATES PATENT. OFFICE. Y

GEORGE B. WALKER, OF LEMOYNE, PENNSYLVANIA, ASSIGNOR OF THREE-FOURTI-ISTO JACOB E.

HERTZLER: OF MEOHANIOSBURG,

PENNSYLVANIA, ROBERT L. MYERS, OF OAMPHILL, PENNSYLVANIA, AND WILLIAM J.LESOURE, OF HARRISBURG, PENNSYLVANIA.

WELDING-MACHINE.

SPECIFICATION forming part of Letters Patent No."769,121, dated August30,1904.

Application filed June 28, 1904.

T0 all-whom, it may concern.-

Be it known that I, GEORGE B. WALKER, a citizen of the United States,residing at Lemoyne, in the county of Cumberland and State ofPennsylvania, have invented certain new and useful Improvements inVVelding- Machines, of which the following is a specifi- 1 cation.

My present invention relates to improvements in welding-machines, andhas special able means for adjusting the hammer mechanism, a removableanvil or lower-portion of the chain-dle, and a pecuhar construction ofhammer or upper die carried by the pneumatic hammer, whereby a wedgingaction isobtained when welding the link, so that the same is welded ormolded into the proper shape without being flattened, the wed'gingaction being carried out in the shortest possible time by the mechanismherein set forth.

-To attain these objects, the invention consists of a welding-machinesubstantially as disclosed herein.

In the accompanying drawings, Figurel is a front elevation -of thecomplete machine. Fig.8 is an enlarged side elevation of the machinewith the pneumatic welding mechanism removed. Figs. 4, 5, and 6 aredetail views of the lower die or anvil, and Figs. 7 8, 9 are detailviews of the upper die or hammer.

Referring to the drawings, the numeral 1 designates the base, which hasformed upon the rear side thereof the bracket 2' for supporting theframe or arm 3, which arm is slotted or bifurcated in its upper end Afor the reception of the tool-carrying frame 5, which is pivotallysecured in said bifurcated end, so as to give the pneumatic tool 6 anydesired adjustment or incline. This arm is also piv- Serial No. 214,521.(No model-3 oted to the bracket 2 at 7, so that a double I adjustmentmay be obtained. This, however, can be dispensed with, as I have foundin' practice that the one adjustment whereby the frame '5 is connectedto the arm 3 is the only one that is absolutely necessary. The base 1 isprovided with the raised portion 8, which is provided with alongitudinalchannel or recess 9 for the reception of the lower wedging or die member10, which is-locked in said recesS by means of the two locking-keys 11.This lower die member is provided with the rectangular recess 12, sothat its rib orprojection 13 will fit within the channel 9, while theprojecting portion 14 will rest upon the surface 15 of the enlargedportion of the base, the upper face of the die being provided with thepeculiar shaped die or projections 16, which is adapted to be surroundedby the link of the chain or ring when being welded.

The pneumatic tool,which is mounted in the frame 5, consists ofthe'cylinder 17, piston 18,

and the die-shank 19. which has removably carried upon its end the upperdie or hammer 20. This die or hammer 20 consists of the socketed portion21, which is provided with the two set-' ther provided with therectangular head 23,

whose under surface is cut on an incline, as at 24, withthewelding-recess 25 in its front I edge and in alinement with the dieor projection 16 of the lower member. By forming the lower face of theupper die inclined or beveled. as at 2 1, a wedging action is given asthe hammer descends upon the lower. die to wedge the link and secure thelap-joint thereof.

By means of the adjustment between the upper end of the arm 3 and theframe 5 the proper incline is given to the pneumatic tool, so that asthe two dies come together a sliding action is given, which properlywelds the lap-joint of the chain against the projection- 16 withoutflattening the same, the. recess 25 in the under face of the die 20being so constructed that when the chain is completely welded no furtheraction upon the chain is given, so that the same cannot be beaten in anyother shape than the desired one.

By'this construction any form or shape of die can be used and anystriking action can take place or any inclined action, as may bedesired. I would also have it understood that any mechanism foroperating the upper die can be employed without departing from thespirit of my invention.

From the foregoing description, taken in connection with the drawings,it is evident that I provide a machine which thoroughly and rapidlywelds the chain or ring, or, in

fact, by changing the construction of the die this construction can beused for welding any form of metal, but, however, is especially adaptedfor welding chains.

What I claim as new, and desire to secure by Letters Patent, is

In a welding-machine, the combination of an anvil with a die for holdingand shaping the interior surface of the welded end of a link, means forlocking the die to said anvil, an arm pivoted to the anvil, atool-support pivoted to the upper end of said arm, a reciprocable toolcarried by said support, and a reciprocable die carried by said toolprovided with a lower inclined surface having a cavity in the forwardportion of its face and constructed and designed to contact the upperface of the stationary die in its downward movement and to then slide orglance toward the forward portion of the stationary die to weld the linkand form the exterior surface of the welded end of the link,

In testimony whereof I afiix my signature in presence of two witnesses.

GEORGE B. WALKER.

\Vitnesses:

DANIEL DRAwBAUen, DAVID I. Moons.

